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A. PRITZKER.

ELECTRIC RADIATOR.

APPLICATION FILED SEPT. 9. 1918.

1,3 10,838, Patented July 22, 1919.

abfozneq UNITED STATES PATENT OFFICE.

ASHER PRI'IZKEB, OF TORONTO, ONTABIO, CANADA ELEOTBIC RADIATOR.

Specification of Letters 2mm. Patented July 22, 1919.

Application filed September 9, 191a. Serial No. 253,124.

To all whom it may concern:

Be it known that I, ASHER PRITZKER,1'I11I1- ufacturer, of the city of Toronto, county of supports now essentially employed in various types of this class of electrical device,

there y providing a device .of this. class which will stand comparatively rough usage without any of the parts being broken or displaced. Another object of my invention is to make the terminal connections with the resistance-element at the back of the radiator, and preferably within the heating-element base, thereby providing a very compact and neat-appearing device, and one whereby I am enabled to couple the radiator to any suitable support. A still further object of the invention is to provide a heatingelement base of a preferred shape, preferably of conical or bee-hive form, mounted as hereinafter particularly set forth, so that the heat-rays radiating from different portions of the base will strike the reflector at different angles and thus be facilitated in their escape from the reflector. By reason of the preferred or equivalent shape of the base, none of the heat rays are projected between the bottom of the base itself and the radiator, as in some makes of similar electrical devices.

Broadly considered, the device comprises a reflector through which a hole formed; an electric heating element base made of any suitable insulating material such as porce lain, and provided with a coupling-flange which extends through the hole formed in said reflector and more or less snugly fitting the same, and projects therebeyond so that a closure-member for the rear end of said base may be coupled thereto in such a manner as to be readily removed therefrom. A resistance-element is wound around the outer surface of said base, and the terminals of sa d element are passed into the interior of sa d base, wh 1ch 1s preferably cored out, and sultable blndlng-posts are provided whereby electrical connection is had with the terminals of said resistance-element.

Flgure 1 is a front elevation of one form of polished metal reflector in which is mounted my electric heating-element base, and Fig. 2 1s a horizontal longitudinal scet1on on the line 2-2, Fig. 1.

In the drawings, like characters of reference refer to the same parts.

A 1s the electric-heating element base made of any suitable insulatin material, such as porcelain, and integra ly formed therewith 1s a couplin -fl-ange B. The outside diameter of the ange B is preferably sufliclently less than the outside diameter of the base A at its widest part, thus forming a shoulder C. D is the reflector, and it will be observed that the hole E is punched therethrough to permit the flange B to pass through the reflector. The shoulder C rests in contact with the reflector. The outer surface of the base A is provided with a spiral groove to receive the resistance-element F which is shown in the drawings in the form of a coil. In order to reduce expause, and also to reduce the weight of the use A, and further to facilitate the making of electrical connections with the terminals 2 of the resistance-element F, the base A is completely cored out. 3 are suitable binding-posts carried by the flange B, with which the terminals 2 of the resistance-element F have connection in the usual manner.

5 is a flanged cap designed to close the open end of the base A. This cap is provided with an apertured insulating bushing 6 held therein through which the wires 4:

ass.

An suitable means is employed to detacha ly couple the cap 5 to the flange B: a suitable means for this purpose comprises a plurality of U-shaped brackets 7, which are coupled by the nuts and bolts designated by the common numeral of reference 8, or equivalent elements,-to the flange B. By means of screws 9, the cap 5, through the medium of its flange 10, is coupled to the brackets 7 By removing the screws 9, the cap 5- may be readily removed and permit the necessary electrical connections to be made without the necessity of having to removethe base A from its support or refiector D.

According to my invention, the base A is supported by its flange B in the reflector D, and, therefore, I overcome all disadvantages arising when the supporting means for a heating-element base forms part of the eucuit.

The construction disclosed is very simple, and while it is relatively cheap, .still it is eflicient and durable.

Since the base A is supported by its flange C in the reflector D or its equivalent, par

ticularly when I use a parabolic-shaped reflector, I find that my manner of mounting the base A gives me greater heating efficiency and, at the same time, provides the reflecting surface of the reflector D with a uniform appearance thus greatly adding to the attractiveness of this device.

The heating-element base A is preferably -conical or bee-hive in shape, though not essentially so. 1

Since the resistance-element F is not posltioned between the base A and the reflector D, on the line of the shoulder C, it will be understood that each heat rayproJected from the resistance-element carried by the base A will strike the reflector .D, and readily escape therefrom. The increase in efficiency in my radiator is due to the fact that the heat rays emitted by the resistance-element, are not choked within the radiator, but are permitted ready and rapid escape therefrom.

In Fig. 1 the resistance-element F is merely shown conventionally in dotted lines.

It will be observed that the base A provides a very convenient and positive means for concentratin about the axis of the reflector, the maximum length of resistance unit without undue overhang of this base beyond the face of the reflector, thereby permitting the flange B to support the base and the resistance element in the reflector without employing clamping means for that purpose.

In my preferred shape of base A, the weight of the overhang decreases as the outer end thereof is approached, and this construction allows for .the proper balancin of the base in respect of the reflector.

ile I have described what I consider to be the best embodiment of my invention, I desire it to be understood that the principle may be embodied in different forms, with out going outside the scope of the appended claims.

Claims.

1. An electric radiator comprising the combination of a reflector provided with a hole therethrough; a heating-element base made of suitable insulating material and integrally provided with a flange extending longitudinally thereof, the outside diameter of which is less than the diameter of the said base at its widest part, thus forming an annular shoulder which abuts against the front side of said reflector when said flange is passed through said hole; a resistance element supported by said base; an apertured housing-means inclosingthe exposed end of said flange and OOmPIlSIIIg means whereby the said base is removably firmly held in the reflector in coiiperation with said shoulder, and means whereb electrical connection is made with the sai resistance-element.

2. An electric radiator comprising the combination of a reflector provlded with a hole therethrough; a conical-shaped cored heating-element base made of suitable insulating material and integrally provided with aflange extending longitudinally thereof, the outside diameter of which is less than the diameter of the said base at its widest part, thus forming an annular shoulder which abuts against the front side of said reflector when said flange is passed through said hole, with which it has an easy fit; a resistance element supported by said base; an apertured housing-means inclosing the exposed end of said flange and comprising means whereby the said base is removably firmly held in the reflector in cooperation with said shoulder, and means whereby electrical connection is made with said resistance-element.

3. An electric radiator comprising the combination of a reflector provlded with a hole therethrough; a conical-shaped cored heating-element base made of suitable insulating material and integrally provided housing-means inclosing the exposed end of said flange and comprising means whereby the said base is removably firmly held in the reflector in cooperation with said shoulder, and means whereby electrical connection is made with said resistance-element.

4:. An electric radiator comprising the combination-of a reflector provided with a hole therethrough; a heating-element base made of suitable insulating material and integrally provided with a flange extending longitudinally thereof, the outside diameter of which is less than the diameter of the said base at its wldest'part, thus forming an annular shoulder which abuts against the front.

side of said reflector when said flange is passed through said hole; a resistance-element supported by said base; means detachably attached to the exposed end of said flange and cooperating therewith and with said shoulder whereby said base is removably firmly held against longitudinal dislacement in the reflector, and means wherey electric connection is made with the said resistance-element.

5. In an electric radiator, the combination with a reflector provided with a hole therethrough, of a heating element base made of suitable insulatin material designed to extend through said hole and pro ect beyond each side of said reflector, and integrally provided with a projecting flange which rests against said reflector, and an apertured detachable housing means attached to the end of said base which projects beyond the rear side of said reflector and adapted to cooperate with said projecting end and said flange whereby said base 1s held against longitudinal displacement in the said refiector.

ASHER PRITZKER. 

